You are legally intoxicated in Texas when your blood alcohol concentration reaches 0.08%, but you are breaking the law as soon as drugs or alcohol affect your driving — or flying or boating — ability.
Intoxicated means:
- (A) Not having the normal use of the mental or physical faculties due to the introduction of alcohol, a controlled substance, a drug, a dangerous drug, a combination of two or more of those substances, or any other substance in the body.
- (B) drinking
